修改时间：2024-07-13 浏览次数：254 类型：期末考试
As the summer travel season rolls in, prices at the gas pump are usually going in the wrong direction for our wallets. That's when drivers become more concerned about how to squeeze the most miles from their fuel dollars and keep their cars running their best. To help you stay in the know, here are some common questions that our auto-experts often get asked about gas mileage and related topics:
What if I need to carry stuff on my car's roof?
Carrying things on the roof hurts fuel economy. When tested a 2013 Honda Accord at a steady 65 mph①, it got 42 mpg② with nothing on the roof. Adding even an empty bike rack(架子)dropped the mileage by 5 mpg. And with two bikes on the roof, gas mileage dropped to 27mpg.
Does running the A/C① hurt fuel economy compared with opening the windows?
It depends on-how hard the air-conditioning system has to work. When we measured the fuel-economy difference, we found that fuel use with the A/C running went up with higher outside temperatures. At 55℃ F, there were unnoticeable differences. But when we measured again on days when the temperature was in the low 70s and high 80s, we got fewer miles per gallon with the A/C on.
How far can I go when my low-fuel warning light comes on?
There is no set rule, but most cars have a reserve of between 1 and 2 gallons of gas when the light goes on, or enough to travel about 40 miles or so at a moderate speed. To maximize those last couple of gallons, we suggest slowing down and maintaining a steady pace.
Can I improve gas mileage by installing a special air filter(过滤器)?
With modern cars, changing your air filter probably won't improve your fuel economy. When we tested a car to see whether a dirty air filter hurt its gas mileage because of reduced air intake, we found that the car's fuel economy wasn't hurt. The engine's computer automatically made up for the restricted airflow by reducing fuel use to maintain the right air/fuel proportion. We expect similar results from any air-filter change.
①mph: mile per hour
②mpg: mile per gallon
③A/C: air-conditioning
Spending Christmas in a foreign country can be a truly eye-opening experience, especially since it's easy to believe that as a worldwide festival, most countries probably celebrate it in a fairly similar manner. Being from the UK, Christmas for me means spending time with family and friends, exchanging presents, eating and drinking, and, of course, hiding from the cold. In Colombia, however, Christmas is viewed much more as a time which devotes itself to religion.
With celebrations beginning on 7 December, Columbia is recognized as having the longest Christmas celebrations period in the world. The celebrations generally begin in the evening with the lighting of candles, either in the streets, parks or outside people's homes. Cities are lit up by candles, as this day marks the beginning of the Christmas period. Although decorations have been up since early November, another tradition in Colombia is that during the nine days before Christmas, family members and friends meet up to pray, sing songs and share traditional foods at home.
Probably the biggest surprise for me has been the music people listen to during the Christmas period. At first, you could easily mistake these songs for the classic salsa, which is played all year round. However, after asking a Colombian if it really felt like Christmas music, they explained to me that the songs are loved more for the memories they symbolize than for the way they sound, and that Colombia has been through so many dark periods in history, it was important to hold on to the good memories of years gone past.
Being in a country like Colombia during this festive period has taught me that you don't need to be religious to take part in these Christmas traditions.
Rumors(谣言): we've all heard some and we've all spread some. In more traditional times they shook entire families. Today, they circulate differently because the way we share information has also changed.
The fact is that rumors have great potential to upset things, whether socially or personally. We don't enjoy being on the receiving end of one, since they usually don't have good intentions. They are somewhat veiled(掩饰的) messages.
Normally rumors are oral messages: word of mouth. The paradox(自相矛盾) is that there is no evidence to support rumors, but the more people share it, the more they see it as true. To finish defining rumors, we think that they follow certain very clear laws. Secrecy: The source is unknown. There is also a proven phenomenon that human beings usually forget the source of a message before they forget its content. Certainty: We hardly question rumors simply because of the mental effort involved. On the other hand, no one likes to doubt a person who convinces us that the information they spread is true. Change: It acts like a tree. New rumors branch out to fill in the gaps left by the initial rumor.
Another property of rumors is that they tend to become viral. Each receiver is at the same time a potential transmitter of the information. The receiver often adds their own opinion. Their manner and tone of transmitting it also changes it.
How can we end rumors? The answer is as simple as it is impossible: preventing people from communicating. A more realistic response is equally difficult, although less than the first one. It is that we should be critical of the information we receive. We should ask ourselves if the source is reliable. Ask (if possible) the person you heard it from whether they also trust the information. We should also think about if the rumor benefits someone, and if that someone started the rumor.
One rumor to be especially cautious of is a rumor about groups relatively unable to defend themselves. That's why we say, "history is always told by the victors." The first payment the defeated must make is to accept the victor's version of the story.
When you measure the distance between towns on foot, walk to places that you thought could only be reached by car, and it will change your mind.
I live in the suburb north of San Francisco, and1is considered the main transportation for most people here. I still remember how2I was when I first learned to drive 10 years ago. While driving with music gently3my heart, I was filled with joy, a joy of independence in a4land! I had a photo taken of me hugging my white car and sent it to my family in China. I love my car!
However, as time went by, that excitement5. I feared driving, and felt worried and6. Everyone seems to be in my way especially when I am in a7. One night, a deer ran out from the dark, knocked off the hood(引擎盖) of my moving car, and landed across the street. I didn't dare to get out of my car to see her. Crying on the8, I hated my car.
When I joined the 21-day mindful walking9, I began to walk with a mind. During the walking days, I said "hello" to a neighbor, who's lived next to me for a year. But I've never10attention to her. I smiled at every stranger passing by me. I walked to the streets that I normally would not pass through and11a tiny free library on the sidewalk. I began to12if I had really lived in this town all these years. It's a completely13town that I know so little about!
I felt deeply14for the walking challenge. Maybe I will15foot on far lands again, yet I know wonder is right here and right now.
The benefits of the following changes will keep you going in your whole life.
Get outside for just five minutes a day.
Spending five minutes walking is easy for everyone. Even if you don't have time to do exercise, that short walk during your lunch break or while waiting for soccer practice to end could offer you some benefits. A study in the journal Environmental Science Technology found that a short burst of exercise in the fresh air could bring benefits to mental health too.
It is difficult to force yourself to go to bed earlier, but you can at least aim at the most peaceful sleep when you finally do go to bed at night. Your bright screen could be keeping you from getting your best night's sleep. .
Look for beauty in life.
Make a point of looking for beauty in the world, and you could improve general happiness. A study in the journal Personality and Individual Differences found that people who wrote down three beautiful human behaviors, three examples of natural beauty, and three other beautiful things they noticed every day were happier after one month than those who didn't. .
Laugh more.
Whether it's talking to a friend who tells jokes, reading posts from your favorite comedian, or watching videos of kittens doing tricks, figure out what activities make you laugh. Laughter helps you forget about sadness. Plus, the American Heart Association says that laughing can decrease stress hormones, and make you feel relaxed.
A. And do them often.
B. Turn off your phone before bed.
C. You will break the cycle of sitting and burn extra calories.
D. People who use cellphones before bed take longer to fall asleep.
E. Put your phone down, make eye contact, and ask follow-up questions.
F. You can write a journal to record the beautiful things in your life.
G. Spending a few minutes each day thinking of nothing can help focus on your task.
(achieve) the rejuvenation(复兴) of the Chinese nation (be) the greatest dream of the Chinese people since modern times, is called the Chinese Dream. Its basic idea is to make the country prosperous and (strength), rejuvenate(使恢复生命活力) the nation, and enable the people to lead a happy life.
The Chinese Dream is dream of peace, (develop), cooperation and mutual benefit, and its realization will do good to the Chinese people and the people of the world.
(realize) the Chinese Dream, each and every Chinese has to work as (hard) as they can only hard work can make dreams come true.
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